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J. AVJ. SHULTZ.-

BELT PULLEY. -f No. 399,636. Patented Man".` l2, 1889.

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nutren rares attr OFFICE..

JOHN A. J. SIIULTZ, OF ST. LOUIS, MISSOURI, ASSIGNOR TO BRUCE C. ALVORD, OF SAME PLACE.

BELT-PU LLEY.

SPECIFICATION forming part of Letters Patent No. 399,636, dated March 12, 1889.

Application filed October 13, 1888. Serial No. 288,022. (No model.)

To all whom it may concern.'

Be it known that I, JOHN A. .I SHULTZ, of St. Louis, Missouri, have made anew and useful Improvement in eltdulleys, of which the following is a full, clear, and exact description.

The said improvement relates to that class of belt-pulleys which are faced with leather or some similar material. The practice hitherto has mainly been to apply the facing to the rim by ceinenting or otherwise securing the facing directly to the face of the pulley-rim.

The presentimprovement consists in applying the facin g by attaching it to the sides of the pulleys, to which end the facing, inthe place of being as wide as the pulley-rim, is made considerably wider, so that when applied it eX- tends laterally' beyond each edge of the rim, and that portion of the facing thus extending is turned tightly over the outer corners of the edges of the rim and securely fastened in continuous grooves provided to receive it inthe edges of the rim of the pulley, whereby the facing is securely fastened to the face of the rim, substantially as herein described and claimed, aided by the annexed drawings, formingpart of this specification, of which- Figure l is a side elevation of a pulley embodying the hercin-d escribed imijnovement; Fig. 2, a cross-section of the rim of the pulley on the line 2, Fig. l; Fig. 3, a cross-section of the same on the line 2i fi, Fig. 1, and Figs. i and 5 details, being views illustrating the mode of uniting the ends of the facing, FigsL being a plan of the facing, and Fig. 5 a section on the line 5 5 of Fig.

Like letters of reference applied to the several drawings denote like parts.

A represents a pulley iu which the improvement is embodied. lf he pulley has the customary hub, a, spoke a', and rim a2, and is of the usual form, savin g as it is modiiied by the present improvement. In each side or edge of the rim of the pulley and extending continuously around with said rim is a groove, B. The edges of the facing C are respectively secured in these grooves, and the facin thereby held in place. The preferable wa of securing the edges in the grooves is to fold the edge as shown at and to force it into the groove, so that it beeouies tightly packed therein, and to better confine the folded edge the groove may be made wider at its bottom than at its top, and to still better fasten the facing, wedges-sucln for instance, as shown at D D- may be inserted between the folds of the edge. 5 5

By this means the facing is tightly and se curely strained upon the face and around the corners of thepulley, and isheld from slipping upon the rim, and the sides of the pulley are free from projections or any rouglmesses cal- 6o culated to interfere with the use of the pulley. At the same time the facing can, by withdrawing its edges from the pulley-grooves, be detached from the pulley.

The abutting ends of the facing may be united or secured evenly in opposition to each other in various ways. One method is indicated.

E E represent U-shaped fastenings passed from the inner side of the facing outward 7o through its ends c c and having a plate, e, applied, and the points c e of the fastenings clinched upon the plate, substantially as shown-that is, one point of the fastening passes through one of the facing ends and the other point of the fastening through the other facing end. The facing ends are drawn snugly together, and the fastening points and plate, when in place, do not substantially project above the general surface of the facing. So

rlhe cross-section of the grooves B is preferably that of a dovetail form, as shown; but other suitable forms may be employed.

The improvement may be applied to an ordinary pulley by the attachment thereto of a circular part, or a circular series of segmental parts, whose outer surface, in conjunction with the pulley-rim, shall form agroove which is the equivalent of that shown.

The improvementis not limited to pulleys, 9o

2. Apulley provided with a facing, said faeroo ing being' wider than the pulley-rim and having its side edges con iinedin grooves, respectively, in the sides of the pulley-rim, substantially as described.

A pulley provided With a facing, said fac- .ing being Wider than the pulley-rim and having its side edges confined in the sides, respect- 15 ively, of lhe rim, and its ends united by means of the fastenings and plates, substantially `as described.

6. A pulley or Wheel provided with a facing,

said facing being Wider than the face of the zo pulley or Wheel, and having its side edges secured to the sides, respectively, of said face,

substantially as described. A

fitness my hand.

JOHN A. J. sHULTZ.

Witnesses;

C. D. MOODY, D. W. AISANF'ORD. 

